Thousands of people look for the little boy who sent a message in a bottle

Thousands of people have joined the hunt to find a six-year-old Londoner after his message in a bottle washed up in Denmark.

Danish national Carsten Hornecker happened across little Freddy Marr's message at Udsholt Strand, a beach in the north of the country, on Tuesday.

The adorable message dated 2016 says Freddy is from London and that his birthday falls on September 2.

The note is signed off "byby".

Mr Hornecker posted a snap of the unusual find on Facebookincluding the dark green bottle, sealed with a cork, in which the message was hidden.

The post has since been shared 1,356 times with friends hailing it a "great discovery".

Not satisfied with the search, Mr Hornecker then contacted beachcomber Nicola White, from Greenwich, through a friend.

Ms White has devoted her time to "mudlarking" on the banks of the Thames since 2011 and has since tracked down the authors of 30 messages in bottles.

The 47-year-old artist posted Mr Hornecker's picture on Twitter and quickly totted-up more than 2,000 retweets in just three hours.

She told the Standard the amount of interest in the picture was "mad" and added: "I've realised people on Twitter love a bit of a challenge and when it comes to a message in a bottle it brings out your inner child.

"When I've tracked down authors before I've a range of reactions but mainly excitement."